Each dot represents an electron. Since the atomic number of oxygen is 8, it will have 8 protons in the nucleus. An atom of oxygen is neutral and so will have 8 electrons. Two electrons will fill ...

More information: Tong Liu et al, Regulating atomic Fe–Rh site distance for efficient oxygen reduction reaction, Science China Chemistry (2024). DOI: 10.1007/s11426-023-1889-6 Provided by ...